Since these are similar triangles you can use any two corresponding sides to figure out the scale factor.
Use the bottom side. Going from the first triangle to the second the scale factor is:
15/9 = 5/3
6.4 is the answer you are looking for! Hope that helps :))
Answer:
c-c+a+|a|
5-5+4+|4|
8
Step-by-step explanation:
